Dau Tu Dich Vu Columbus Joint Stock Company Address: No 70, Lane 323, Xuan Dinh Street, Xuan Dinh Ward, Bac Tu Liem District, Ha Noi City Enterprise code: 0109503442 Phone: 02433668879 Representative: Luong Manh Cuong Xuan Dinh Ward, Bac Tu Liem District, Ha Noi CityFounding date: 20 - 1 - 2021